National Influenza Sentinel Surveillance (NISS) was established in Nigeria in 2006 to monitor influenza occurrence in humans in Nigeria and provide a foundation for detecting outbreaks of novel strains of influenza. The evaluation was conducted to assess the performance of the surveillance system from January to December 2014 and identify factors affecting the performance. The system was determined to be useful, flexible, acceptable, and simple. However, timeliness and stability need to be strengthened.
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